package com.yzb.lee;

public class NutritionFacts
{
    private final int servingSize;
    private final int servings;
    private final int calories;
    private final int fat;
    private final int sodium;
    private final int carbohydrate;
    
    public static class Builder
    {
        private final int servingSize;
        private final int servings;
        
        private int calories = 0;
        private int fat = 0;
        private int sodium = 0;
        private int carbohydrate = 0;
        
        public Builder(int servingSize, int servings)
        {
            this.servingSize = servingSize;
            this.servings = servings;
        }
        
        public Builder calories(int val)
        {
            calories = val;
            return this;
        }
        public Builder fat(int val)
        {
            fat = val;
            return this;
        }
        public Builder sodium(int val)
        {
            sodium = val;
            return this;
        }
        public Builder carbohydrate(int val)
        {
            carbohydrate = val;
            return this;
        }
        
        public NutritionFacts build()
        {
            return new NutritionFacts(this);
        }
    }
    
    private NutritionFacts(Builder builder)
    {
        servingSize = builder.servingSize;
        servings = builder.servings;
        calories = builder.calories;
        fat = builder.fat;
        sodium = builder.sodium;
        carbohydrate = builder.carbohydrate;
    }
}
